Deep brain stimulation (DBS) electrodes. Lateral X-ray of electrodes (white, upper right) in the brain of a 58-year-old patient with Parkinson's disease. This neurosurgical treatment involves the implantation of electrodes in the cerebral lobes of the brain, linked through the scalp (top) to wires (down left) leading to a battery implanted below the skin (here, by one of the shoulder blades). This sends electrical impulses to specific areas of the brain. DBS was developed for the treatment of Parkinson's disease, but is being investigated for use in other conditions.